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ISAAC S. RUSSELL AND HENRY R. RUSSELLOF NEW MARKET, MARYLAND. Laim Patent No. 61,914, azie-fz August 2o, 1867.

IMPROVEMENT IN HARVESTERS.

tro ALL wHoM MAY.. coNonnN:

Be it knownjthat we, ISAAC S. RUSSELL and HENRY R. RUSSELL, of New Market, in the county7 of Fred,- erick, and State of Marland, have invented a new and imprpved IIarvester-VVheehand we do hereby declare theV following to be afull and exact description of the same, reference being had to the accompanying drawings, which are-made part of this specification, and in which-#- u Figure 1 is a view in perspeotveof our invention.

Figure 2 is a central vertical section through wheel A.

Figure 3 is a side view of our invention, the wheel A being removed in order to show more plainly `the construction and operation of` the vibrating support B. i

In turning a harvester in the field it is well known that the machine turns upon the larger wheel, that wheel remaining stationary, or at Ymost describing 4a small circle, while the smaller wheel describesa large circle around the spot on which the largerI wheel rests. In doing this the same diiiiculty is experienced that is experiencped by railroad cars in turning short curves. The outer wheel is forced around ina line not 4coincident with the direction of its face, but at an angle with it, thereby wasting a great amount of power and wearing out the wheel very rapidly. To obviato this difficulty in harvesters we have constructed our improved wheel, which will in turning any curve aiways change the direction of its own axle so as to I nove in 'a line coincident with the directionof the plane of the wheel. 4

To effect this we construct a wheel, A, with a very wide flange, a, and a stout, deep hub, 6, the outer extremity of the hub firmly fixed to an introverted shaft, upon which the'wheel moves, the shaft c or axle by being thus attached to the hub having the same motion as the wheel. This shaft is supportedby and hasits bearings in anelon'gated hollow socket, C,` which, held in position by two pins, p p, moves' upon them` as -on a" pivot, having a'horizontal motion backward and forward with the machine like a hinge. -When the socket C moves thus onY its pivotpp, ofcourse the wheel A, the axle of which bears in the lsocket C, pnrtakes of the movement and changes its direction. VNow, to the side of thel harvester we attach a strong, fixed support, F, and to this,by means of the screw and nut f at the upper end, and a bolt at the lower end, we fasten a strong xed brace, G, the upper extremity of which is bent outward and then bent upward parallel to theupright support F. Through the very extremity of this brace-Gr passes a pinV which serves as a pivot, upon'whioh hinges.

a vibrating support, H, of the-form shown in iig. 2, a slot'and pin,'shown at g, conning the swinging of the support H within the proper limits. The support H has two projections,l I I, in the outer extremity of which the pinsp p are iixed, upon which the socket C pivots. Thus constructed the vibrating support H swings backwards and li`orwards the length ofthe slotg, as shown in iig. The wheel A, supported entirely by the vibratingsupport H, partakes'of this motion. The wheel A also moves, as before described, backward and fforward by means of its socket C on thopivotspp. Twolittleear's, e e, projecting outward from the side of the support H, slightlybeyond the inner end of' the socket C, keep Athe motion oi' the Socket C within the proper limits, and prevent the wheel A from changing its direction too much.

Y Now, suppose a harvester constructed with the wheel or supports thus described, and as shown in iig. 1,' to be standing'in the eld, and you desire to turn it; it is evident that unless you would face your wheel round, as we have described: the wheel of the railroad car beingv forced round, you must contrive the wheel so that the side of its periphery, which, as it moves is ahead, will constantly turn inward toward the machine. This our improved wheel always does, whether the harvester be turned toward the right or the left. .If a machiney such as is shown in iig. I be turned to the right, rst the vibrating support H is thrown forwardtl`uus chang-- ing the direction of the-wheel to a certain degree, as desired. The force applied to-move the machine round `then acting on the socket G at the pivot pp, causes the inner extremityof the socket C toA be thrown forward and outward, and the outer extremity backward and inward, thus bringing thewheel 'whichzbears ,on the socket i round inthe same direction. The two motions, that of the vibrating support H and that oi'l the socket C, thus i combine with each other in increasing. the change in the direction of the wheel A. The motion of the vibrating support H, which takes place before the other motion begins, also by partially changing the direction of the socket C facilitates the further change in the direction of the socket, which is tobeproduced by the movement of the wheel A backward or forward, as the case may be. i

Having thus described our invention, what we claim. as new, and desire to secure by Letters Pat-ent, is-

1. The vibrtng support H, substantially as andv for the purpose described.

2. Thewheel A, having its axle (Operating) in the pivoted socket C, substantially as and for the purpose described. l

ISAAC S. RUSSELL,

. HENRY R. RUSSELL. Witnesses as to ISAAC S. RUSSELLS signlature:

WILLAM W. OGBORN, JOHN T. LOWE. Witnesses as to HENRY R. RUSSELLS signature:

J. A.- REINHART, E. F. J AOKSON. 

